all ports belong to one untagged vlan, different from standard vlan default.
The authentication works well, but sometimes i need to connect some equipment who not support dot1x authentication, i connect the equipment before remove the authentication on the port and everytime when i remove the port from the current vlan, this port go to authvlan and i can not put in another, everytime i try to assign other vlan, display the mesage shown below:

Error: Protocol conflict when adding untagged port 5:21. Port 5:21 is already
untagged in vlan "authvlan".
Either add this port as tagged or assign another protocol to this VLAN.

Configuration failed on backup MSM, command execution aborted!

Then i remember that port has authentication configured and i remove the netlogin configuration from current port, but the problem persist!
Even the netlogin configuration disabled on the port, i cannot assign other untagged vlan.

Yes, but sometimes i forgot to disable netlogin first and the port stay on authvlan :/
I need to know some way to assign another untagged vlan when this occur.
Another way that not be restart all stack or current node or disable netlogin globally because there are 300 users connected that will lost connection. (from Augusto_Queiroz)